The ancient Maya flourished in modern day Mexico and Central America for millennia. They built incredible cities and they had sophisticated knowledge of astronomy, architecture and the natural world. But although Maya culture continues to exist today, around 900 AD, many of their great settlements collapsed, and today they lie in ruins.

CrowdScience listener Michael wants to know - how did the Maya sustain their populations successfully for so long? And what happened 1000 years ago that led them to abandon their cities?

To find out, presenter Melanie Brown travels to the forests of Western Belize. She visits the archaeological site of Xunantunich to learn about what life would have been like for the Maya living in what was once a prosperous city. She hears about the importance of water to the Maya way of life in this region, and their ingenious methods for capturing and storing rainfall.

She meets archaeologists using lasers and drones to map Maya settlements that have lain hidden by jungle for centuries. And she discovers what material from the bottom of lakes can tell us about how the Maya faced a changing climate, which may have had huge consequences for their society.

This episode is being released on Earth Day 2022. As we face an uncertain future of our own amid a climate crisis, are there any lessons we can learn from the Maya about how to live sustainably on this planet?

Presented by Melanie Brown and produced by Anand Jagatia

Featuring: Elias Cambranes, Maya expert and tour guide Prof Lisa Lucero, University of Illinois Urbana-Champaign Prof Tim Murtha, University of Florida Dr Eben Broadbent, University of Florida Prof Mark Brenner, University of Florida

Photo: Ancient ruins of the Mayas deep in the forest of Belize Credit: Simon Dannhauer/Getty Images

Why did the ancient Maya abandon their cities?

CrowdScience

Why did the ancient Maya abandon their cities?